The ESP system is the shorten word of Electronic Stability Control system. This system recognizes a critical driving condition by Yaw-rate sensor, Lateral acceleration sensor and Steering angle sensor. And then it stabilizes the vehicle by a individual wheel braking and engine torque control through CAN communication. There is no difference in the HECU's hardware side according to a vehicle speficiation, but there is a difference in its software side because the applied vehicle parameters differ according to a vehicle specification. The HECU stores the variant code value in the ECU's memory based on the received data by CAN communication.
The HECU checks variant code and if an inappropriate variant code or no variant code is detected, this DTC is set.
Item | Detecting Condition | Possible cause |
DTC Strategy |
•
Internal monitoring | 1. Variant coding not carried out 2. T/M ECU, 4WD ECU, EPB ECU replacement |
Enable Conditions |
•
In case that 4WD message is received in 2WD Vehicle
•
In Case that a Variant set is not finished
•
In case that logitudinal G sensor message is received in no logitudinal G sensor variant Vehicle
•
In case that AT/MT/CVT T/M message is received in DCT T/M Vehicle
•
In case that DCT T/M message is received in AT/MT/CVT Vehicle
•
In case that EPB message is received in no EPB Vehicle
•
In case that the value added function configuration is not coded | |
Fail Safe |
•
Inhibit the ABS/ESP(ESC) control and allow the EBD control
•
The ABS/ESP(ESC) warning lamp is activated |
